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1.
Dis Aquat Organ ; 89(1): 87-95, 2010 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-20391916

RESUMO

We documented the presence of fibropapillomatosis (FP), a debilitating tumor-forming disease, in marine turtles in Espirito Santo Bay (Brazil) from March 2007 to April 2008, and assessed the value of a specific environmental index for predicting the prevalence of FP. Turtles were captured monthly with entanglement nets and scored for presence and severity of FP. For the assessment of habitat quality, we used the ecological evaluation index (EEI) based on benthic macrophytes. The FP-free control area was classified as good quality (EEI = 8) and the study area, with high FP prevalence, was classified as bad quality (EEI= 2). Prevalence of FP in the study area was 58.3% with an average of 40 tumors per individual, and prevalence varied positively with curved carapace length (CCL). No FP was seen in the control area. The number of turtles heavily afflicted (tumor score category 3) was 10 times larger than those lightly affected (tumor score category 1). Most tumors were found on or near the front and rear flippers; no oral tumors or internal tumors were found. At recapture, 41% of formerly tumor-free turtles revealed FP, often increasing in severity with time, and very few turtles showed signs of disease regression. From the results of this study we concluded that FP is particularly severe in Espírito Santo Bay. Future studies should focus on evaluating how widespread FP is in Brazil, whether prevalence is increasing or decreasing, and elucidating the pathology and pathogenesis of FP in sea turtles in Brazil.


Assuntos
Poluição Ambiental/efeitos adversos , Fibroma/veterinária , Papiloma/veterinária , Tartarugas , Animais , Oceano Atlântico , Brasil/epidemiologia , Monitoramento Ambiental , Monitoramento Epidemiológico , Fibroma/epidemiologia , Fibroma/patologia , Papiloma/epidemiologia , Papiloma/patologia , Neoplasias Cutâneas/epidemiologia , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/veterinária
2.
Mar Pollut Bull ; 62(6): 1297-302, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21450314

RESUMO

To show the influence of coastal habitat degradation on the availability of food for green turtles (Chelonia mydas), we assessed the dietary preferences and macroalgae community at a feeding area in a highly urbanized region. The area showed low species richness and was classified as degraded. We examined stomach contents of 15 dead stranded turtles (CCL=44.0cm (SD 6.7cm)). The diet was composed primarily of green algae Ulva spp. (83.6%). In contrast, the macroalgae community was dominated by the green alga Caulerpa mexicana. We found a selection for red algae, seagrass and Ulva spp., and avoidance for C. mexicana and brown alga Dictyopteris delicatula. The low diversity of available food items, possibly a result of environmental degradation, likely contributed to the low dietary diversity. The nutritional implications of this restricted diet are unclear.


Assuntos
Dieta/estatística & dados numéricos , Tartarugas/crescimento & desenvolvimento , Poluição da Água/estatística & dados numéricos , Animais , Biodiversidade , Brasil , Clorófitas/classificação , Clorófitas/crescimento & desenvolvimento , Monitoramento Ambiental , Alga Marinha/classificação , Alga Marinha/crescimento & desenvolvimento , Poluição da Água/análise
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